Wireless lockset with integrated angle of arrival (AOA) detection

Abstract

A lockset with a latch assembly having a bolt movable between an extended position and a retracted position. The lockset includes a motor configured to move the bolt between the extended position and the retracted position. A controller is provided that is configured to electronically control the motor to control movement of the bolt between the extended position and the retracted position responsive to receiving a valid authentication from an authentication device. The lockset includes a receiver connected to an antenna to detect an incoming wireless signal transmitted from an authentication device. The controller includes an angle of arrival sensor configured to determine a distance and a direction to the authentication device by analyzing a wireless phase and timing of the incoming wireless signal transmitted by the authentication device. The controller is configured to control movement of the bolt between the extended and retracted positions based, at least in part, on the distance and the direction to the authentication device.

What is claimed is: 
     
       1. A lockset comprising:
 a latch assembly including a bolt movable between an extended position and a retracted position; 
 a motor configured to move the bolt between the extended position and the retracted position; 
 an interior assembly and an exterior assembly, wherein only one of the exterior assembly or interior assembly includes an antenna; 
 a controller configured to electronically control the motor to control movement of the bolt between the extended position and the retracted position responsive to receiving a valid authentication from an authentication device; 
 a receiver connected to the antenna to detect an incoming wireless signal transmitted from an authentication device; 
 wherein the controller includes an angle of arrival sensor configured to determine a distance and a direction to the authentication device by analyzing a wireless phase and timing of the incoming wireless signal transmitted by the authentication device; 
 wherein the controller is configured to control movement of the bolt between the extended and retracted positions based, at least in part, on the distance and the direction to the authentication device; and 
 wherein the controller is configured to analyze the distance and direction information using an algorithm to detect patterns in the distance and direction information, wherein the detected patterns reflect the authentication device moving in a geometric pattern. 
 
     
     
       2. The lockset of  claim 1 , wherein the controller is further configured to store the detected patterns in a memory for use as an authentication factor for determining whether to move the bolt between the extended and retracted positions. 
     
     
       3. The lockset of  claim 2 , wherein, in response to the controller detecting a pattern stored in memory, the controller sends a signal to the motor to control movement of the bolt between the extended position and the retracted position. 
     
     
       4. The lockset of  claim 3 , wherein, in response to the controller detecting the pattern stored in memory and receiving a valid authentication code from an input device, the controller sends a signal to the motor to control movement of the bolt between the extended position and the retracted position. 
     
     
       5. The lockset of  claim 2 , wherein, in response to the controller detecting an incorrect pattern in an attempt to perform a pattern stored in memory, the controller will send a signal to an output device to alert the user of an incorrect pattern. 
     
     
       6. The lockset of  claim 1 , wherein the controller is further configured to analyze the distance and direction information to determine if the authentication device is one or more of approaching or getting farther away from the lockset. 
     
     
       7. The lockset of  claim 6 , wherein, in response to a determination the authentication device is approaching or getting farther from the lockset, the controller sends a signal to the motor to control movement of the bolt between the extended position and the retracted position. 
     
     
       8. The lockset of  claim 1 , wherein the controller is further configured with a location sensor to further identify a location of the authentication device. 
     
     
       9. The lockset of  claim 8 , wherein the location sensor receives global positioning satellite (GPS) data received from the authentication device to identify the location of the authentication device. 
     
     
       10. A method of detecting an authentication device for use with an electronic lockset, the method comprising:
 providing an electronic lockset with a controller configured to control movement of a bolt between a locked position and an unlocked position, wherein the electronic lockset includes an interior assembly and an exterior assembly and only one of the exterior assembly or interior assembly includes an antenna; 
 monitoring, by the controller, for an incoming wireless signal emitted from an authentication device; 
 detecting, with a receiver and the antenna, the incoming wireless signal; 
 analyzing, by the controller, wireless phase and timing information from the incoming wireless signal; 
 determining, by the controller, distance and direction to the authentication device through the analysis of the wireless phase and timing information; 
 analyzing the distance and direction information to detect patterns in the distance and direction information, wherein the detected patterns reflect the authentication device moving in a geometric pattern; and 
 controlling movement of the bolt between the locked and the unlocked positions based on the distance and direction to the authentication device. 
 
     
     
       11. The method of  claim 10 , further comprising storing the detected patterns in a memory. 
     
     
       12. The method of  claim 11 , wherein, in response to detecting a pattern stored in memory, the controller controls movement of the bolt between the locked position and the unlocked position. 
     
     
       13. The method of  claim 12 , wherein, in response to the controller detecting the pattern stored in memory and receiving a valid authentication code from an input device, the controller sends a signal to control movement of the bolt between the locked position and the unlocked position. 
     
     
       14. The method of  claim 13 , wherein, in response to detecting, with the controller, an incorrect pattern in an attempt to perform a pattern stored in memory, the controller will send a signal to an output device to alert the user of an incorrect pattern. 
     
     
       15. The method of  claim 14 , further comprising analyzing the distance and direction information to determine if the authentication device is approaching or getting farther from the lockset. 
     
     
       16. The method of  claim 15 , wherein, in response to a determination by the controller that the authentication device is approaching the lockset, the controller sends a signal to control movement of the bolt between the locked position and the unlocked position. 
     
     
       17. The method of  claim 16 , wherein, in response to a determination by the controller that the authentication device is getting farther from the lockset, the controller sends a signal to control movement of the bolt between the locked position and the unlocked position. 
     
     
       18. The method of  claim 10 , wherein the controller is further configured with a location sensor to further identify a location of the authentication device.